Temperature
5870 K
5790.3 to 5962
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Stellar HostProfile
WASP-81
Unclassified star • 398.5 pc
Records
4
literature rows
Planets
1
system count
References
5
distinct source labels
TIC: TIC 399402994
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Triaud et al. 2017 • System source: TICv8
Mass
1.08 Msun
1.08 to 1.09
Radius
1.28 Rsun
1.18 to 1.28
Luminosity
0.25 log(Lsun)
0.15 to 0.25
Distance
398.5 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.28 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
WASP-81
1.28 R☉
System Layout
Known planets
1 planets linked to this host
WASP-81 b
Transit
◌
Discovery
2017
Period
2.72 days
Radius
16.02 R⊕
Mass
231.7 M⊕
Eq. Temp
1623 K
WASP-81 b: A Jupiter-like World Transiting WASP-81
WASP-81 is a star 1300 light-years away with one known planet. The host star has a mass of 1.08 solar masses, a radius of 1.28 solar radii, and a temperature of 5870 K. Its reported mass and radius estimates are both larger than the Sun's.
The only planet known to orbit WASP-81 is WASP-81 b, a Jupiter-like world discovered by transit in 2017. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. WASP-81 b has a mass of 232 Earth masses and a radius of 16 Earth radii, both larger than Earth's. Its orbital period is 2.72 days. Its mean density is 0.311 g/cm³, 0.0564 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable